RGB is the color that is displayed on digital screens, such as the computer, laptop, phone, and TV, and it is also known as red, green, and blue. Most printers will automatically convert RGB files to CMYK without your knowledge. Because RGB is only available online, all digital and website content must be accessed via the Internet. As a "test", I copied the AI RGB file and pasted it into a Photoshop Adobe RGB document, On-screen the AI file matched the PSD file side-by-side (so far). In Photoshop, I went to Mode>CMYK and the colors "slightly" shifted to a less saturated version (as expected), but totally usable for print (perceptually the same for most people without This has several steps, in general terms: Calibrate your monitor. Calibrate your printer and generate a color profile to the specific printing conditions including machine, paper, and inks. Use the profile on the computer to simulate the colors on the screen that will be printed. Put your CMYK images directly into InDesign or whatever program you'll use to create your PDF. If your image is in an RGB color space (including sRGB), then use Adobe Photoshop to convert your images to CMYK following the steps below. Photoshop is a fully color-managed application and can convert your images with a minimal amount of color shift. Video Tutorial How To Convert RGB To CMYK In Photoshop CC Without Flattening Image Want to watch along as I demonstrate this conversion technique? My super quick video tutorial above is at your service! Step-by-Step Tutorial Step 0 – Do not use image > mode to switch your document. 01. Find your image mode. Changing from RGB to CMYK is easy (Click the icon in the top right to enlarge the image) To reset your colour mode from RGB to CMYK in Photoshop, you need to go to Image > Mode. Here you'll find your colour options, and you can simply select CMYK. 02. RGB is additive. The more color (made of light) you add, the closer you get to white. CMYK is subtractive. The more color (made of ink, which is reflective, which subtracts light) you add, the closer you get to black (or actually a muddy brown). CMYK has a smaller range, or gamut, of colors it can reproduce than RGB does. What you can do about it: An Adobe RGB display can have an edge over P3 in covering some extreme cyan colors, but if you’re currently using an sRGB display, a P3 display will still show you more of the CMYK color range than you’re seeing now. A P3 or Adobe RGB display can reproduce more colors of the FOGRA39 CMYK standard than an sRGB display, but Adobe RGB may be a No, none of this makes any sense. CMYK is a device-dependent color space and arbitrarily converting CMYK colors to RGB serves no purpose, as even if they were created with a specific color profile/ output device in mind, a different device (printer or whatever) would still interpret it differently and mix up the inks. that is the whole point. Even in Photoshop, you can't convert an image from RGB to CMYK and then back again without losing or altering some of the color information. EDIT: You mention a couple of times in your comments that you just want "RGB values in percentage." GW8L.